DataSet binding to Chart

Im working with visiual Studio 2010 in a Windows Form Application using C#.
I created a DataSet (Project / Add Component / Data / DataSet) Then Creat a new Table(worktable) and add 3 Columns(one,two,three) to it.
The Forms Window got a DataGridView wich is connected to to the DataSet (DataGridview properties Datasource: workTableBindingSource) This works fine the DataGridView shows the correct actual Data in the DataSet.
But in the the Chart it doesen't.
I set the Chart Datasource to the same as in the Gridview. Then i open the Series Editor go to Series1. In the properties for YValueMember i can select one of the Columns but in the YValueMember i can't??? Why?

If i write it in code then if i try to bind the DataSet to a Spline Chart the error:
*(Data points insertion error. Only 2 Y values can be set for this data series,Parameter name: dataSource) * shows up.

Hi. so this is actually a continuation from another question of mine[Here](https://www.daniweb.com/programming/software-development/threads/506795/dynamically-add-values-into-datagridview-cell-from-listbox-vb2010) but i was advised to start a new thread as the original question …

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